Jimmy R

I have an 89 IROC with an aftermarket system in it alpine head unit with cd and alpine 450 amp I want to replace the front and back speakers
1st- what size direct replacements do I need and how hard is it to do dash speakers myself 1st system was a gift and came w/ installation so I have no idea how to remove the dash to replace those speakers

Bob88GTA

iTrader: (2)

Welcome!
First, remove the four long screws closest to windshield by the defroster vents. Then go across under the front of dash and remove the handful there. Then pick up front of dash slightly and remove.

Speakers are everywhere. Go to Crutchfield.com and plug in your vehicles info and it will list what fits. They are 4x6 max. for the front and 6x9 for the rear

jwfirebird

iTrader: (2)

should see if the 450 is peak watts or rms. if you post a model number we can give better recommendations. unless you already have something in mind. the 4x6's for the front are a concern for depth the duct under it causes fitment issues and the power of a 4x6 is very much normally. what do you have now and why do you want to upgrade?

Jimmy R

Honestly not sure anymore I think the whole system was alpine got it as a gift for Christmas 10 yrs ago from sound fx located in east providence ri
I can get model numbers of the head unit and amp but not sure about speakers reason I want to change is simple speakers not sounding good anymore just want to replace them

Scorpner

iTrader: (4)

The fronts require special shallow speakers which in my experience don't sound all that great and mine didn't last very long.

jwfirebird

iTrader: (2)

there are ones that work, there was a thread about it actually. i have normal polk db 461's and they fit just barley but no mods necessary. they wont handle an amp though. have to be hooked to the hu directly. it may be better to just hook the amp to some good 6x9's. i have polk db691's they sound pretty good as long as its amped.